Universal Audio 710 Twin-Finity - the tube/solid-state blending microphone preamp and DI. A continuously variable blend between a 12AX7 valve stage and a transimpedance solid-state stage, so you dial the character in rather than switch between two of them.

Built week 15 of 2022, serial 106304 - a late-run unit, not an early one. The date code is on the rear label and photographed.

TESTED IN FULL on 30 August 2026 and working. The FET/valve blend control sweeps clean across its whole range.

The original Chinese valve was replaced with a Russian 12AX7 - to me it sounds like there is more clarity now. The original Chinese valve is kept and ships with the unit, so you can go back or compare.

CONDITION: used, excellent. Light surface marks on the top cover from handling, visible in the photos. Nothing else to report.

WHAT YOU GET: the unit, its mains cable, and the original Chinese valve. No box and no manual - please take that into account.

SHIPPING from Varna, Bulgaria, inside the EU - no customs and no import VAT for EU buyers. Insured courier with tracking and a declared value. Private sale, no returns.